The corners of these buildings are inscribed by a century of bored rail workers and delivery drivers. Pictured is the southeast corner of the Twohy, which is typical of mercantiles.

“W.N 7-30-86”. Brick Graffiti Series.

These long curved corridors connected the wards. Locked doors on both of their ends were a security and comfort feature. Sounds and people would be sealed in their respective wards, as the hallways would act like beautiful airlocks; they were so long that it was unlikely that doors would be open on both sides at the same time. Portra 160.

The top floor of the nitrating house was full of switches and breakers for the operation below, each bearing a label and number. Nowadays everything is printed, but when INAAP was built, all these signs were painted by hand.

Looking across the catwalk behind the ore chutes, when they were up, and at the top of the ore chutes during loading.

When you watch TV from the jars, it seems so much more real, they tell me.